The effect of reward duration on demand functions for rest in dairy heifers and lying requirements as measured by demand functions

Jensen, Margit Bak; Pedersen, Lene Juul; Munksgaard, Lene

doi:10.1016/j.applanim.2004.08.006

Cited by 154 publications

(93 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, lying can justifiably be viewed as a more energy-efficient behaviour in feedlot cattle. Jensen et al (2005) pointed out that 400-kg dairy heifers have a fairly inelastic daily lying requirement of 12-13 h. Consequently, animals in both treatments responded to increased ambient temperature by lying down. That shade decreases the proportion of animals panting or the respiration rate is consistent with previous reports (Mitlöhner et al 2001a;Kendall et al 2007).…”

Section: Discussionmentioning

confidence: 96%

The effects of shade on performance, carcass classes and behaviour of heat-stressed feedlot cattle at the finisher phase

Blaine¹,

Nsahlai

2010

Trop Anim Health Prod

View full text Add to dashboard Cite

The study aimed to determine the impact of shade on the performance, carcass class and behaviour using 146 crossbred steers and bulls during the finishing phase on a commercial feedlot in February. Treatments were (1) shade and (2) no shade. Average daily gain (ADG), DMI, and feed efficiency were measured, and hot carcass weight (HCW) and grades were collected at slaughter. The proportion of animals within a pen engaged in various behavioural activities (standing, lying, feeding and panting) was recorded. Five randomly selected individual animals per treatment were monitored every 2 min between 0700 and 1600 hours to determine the time spent on each of the above activities. Shade improved the final body weight (P < 0.0001), ADG (P = 0.079), and HCW by 8.33 kg (P < 0.05). Shade increased (P < 0.05) the feeding activity but decreased (P < 0.05) panting behaviour. Shade conferred an economic benefit of R2.03 head(-1)week(-1), and thus would reduce heat stress and increase the feedlot profitability.

show abstract

Section: Discussionmentioning

confidence: 96%

The effects of shade on performance, carcass classes and behaviour of heat-stressed feedlot cattle at the finisher phase

Blaine¹,

Nsahlai

2010

Trop Anim Health Prod

View full text Add to dashboard Cite

show abstract

“…Several authors have reported an inverse relationship between lying time and the moisture content of the lying surface (e.g., Keys et al, 1976;Fregonesi et al, 2007). When dairy cows had access to stalls with dry bedding, their lying time was 13.8 h/day but with wet bedding this fell to 8.8 h/day (Fregonesi et al, 2007) which is well below the inelastic demand of 13 h/day reported by Jensen et al (2005). Munksgaard et al (2005) found that lying time had a higher priority than social contact or eating time.…”

Section: Discussionmentioning

confidence: 81%

Assessing the welfare challenges to out-wintered pregnant suckler cows

Morgan¹,

McIlvaney²,

Dwyer³

et al. 2009

Animal

View full text Add to dashboard Cite

Out-wintering beef cows reduces annual housing costs and bedding requirements and there is less exposure to diseases associated with housing. However, to counter these benefits cows may be exposed to conditions that pose a significant challenge to welfare, and ways of assessing this are required. Two feeding treatments were applied to four groups of 10 cows (two groups/treatment), one to maintain condition score (H) and the other to allow a modest loss of condition score (L), which is commonly applied in farm practice. Cow groups were rotated around four paddocks in a Latin Square design of four periods each of 3 weeks, and they were weighed and condition was scored at the end of each period. Their behaviour and location was recorded at 30-min intervals with six 3-h sessions in each period. Ambient temperature, wind speed, rainfall and solar radiation were recorded every 30 min to enable calculation of cow lower critical temperature (LCT). The climatic conditions were wet at the start of the experiment with moderate wind speeds throughout (5 m/s) and relatively mild ambient temperature (58C). Feeding treatment had no significant effect on any of the variables measured. Cows spent most of the observation sessions standing, particularly at the beginning of the experiment when the soil conditions were wettest. They sought sheltered locations when wind speeds were high and thus their calculated LCT was near or below ambient temperature. Nutritional models predicted periods of cold stress but the cows adapted their behaviour to counteract this, emphasising the need for a combined physical and behavioural approach to assessing welfare challenges.

show abstract

“…It has also been shown that the motivation to lie down in heifers increased with deprivation of lying time (Jensen et al, 2004a). Jensen et al (2005) found that pregnant heifers were prepared to make an effort to lie down for 12-13 h/d suggesting that this is the average preferred resting time. Lying bouts longer than 20 mins also seem to be preferred to shorter bouts.…”

Section: Lyingmentioning

confidence: 99%

Scientific report on the effects of farming systems on dairy cow welfare and disease

2009

EFSA Journal

View full text Add to dashboard Cite

The effect of reward duration on demand functions for rest in dairy heifers and lying requirements as measured by demand functions

Cited by 154 publications

References 15 publications

The effects of shade on performance, carcass classes and behaviour of heat-stressed feedlot cattle at the finisher phase

The effects of shade on performance, carcass classes and behaviour of heat-stressed feedlot cattle at the finisher phase

Assessing the welfare challenges to out-wintered pregnant suckler cows

Scientific report on the effects of farming systems on dairy cow welfare and disease

Contact Info

Product

Resources

About